samoa-samza/src/main/java/org/apache/samoa/utils/SerializableSerializer.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.samoa.utils;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.Serializer;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;

/**
 * Serialize and deserialize objects with Java serialization
 * 
 * @author Anh Thu Vu
 */
public class SerializableSerializer extends Serializer<Object> {
  @Override
  public void write(Kryo kryo, Output output, Object object) {
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    try {
      ObjectOutputStream oos = new ObjectOutputStream(bos);
      oos.writeObject(object);
      oos.flush();
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
    byte[] ser = bos.toByteArray();
    output.writeInt(ser.length);
    output.writeBytes(ser);
  }

  @SuppressWarnings("rawtypes")
  @Override
  public Object read(Kryo kryo, Input input, Class c) {
    int len = input.readInt();
    byte[] ser = new byte[len];
    input.readBytes(ser);
    ByteArrayInputStream bis = new ByteArrayInputStream(ser);
    try {
      ObjectInputStream ois = new ObjectInputStream(bis);
      return ois.readObject();
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

}